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gojs: extracts parameter names into a pseudo name section (#963)

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`GOARCH=wasm GOOS=js` defines parameter names in go source, and they are
indirectly related to the wasm parameter "sp". This creates a pseudo
name section so that we can access the parameter names. The alternative
would be adding a hack to normal FunctionDefinition, only used for gojs.

Signed-off-by: Adrian Cole <adrian@tetrate.io>
This commit is contained in:
Crypt Keeper
2022-12-27 14:09:20 +08:00
committed by GitHub
parent 1ad900d179
commit 5751bd758c
8 changed files with 345 additions and 158 deletions
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45
internal/gojs/runtime.go
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@@ -5,33 +5,20 @@ import (
"fmt"
"github.com/tetratelabs/wazero/api"
"github.com/tetratelabs/wazero/internal/gojs/custom"
"github.com/tetratelabs/wazero/internal/gojs/goarch"
"github.com/tetratelabs/wazero/internal/wasm"
)
const (
wasmExitName = "runtime.wasmExit"
wasmWriteName = "runtime.wasmWrite"
resetMemoryDataViewName = "runtime.resetMemoryDataView"
nanotime1Name = "runtime.nanotime1"
walltimeName = "runtime.walltime"
scheduleTimeoutEventName = "runtime.scheduleTimeoutEvent" // TODO: trigger usage
clearTimeoutEventName = "runtime.clearTimeoutEvent" // TODO: trigger usage
getRandomDataName = "runtime.getRandomData"
)
// Debug has unknown use, so stubbed.
//
// See https://github.com/golang/go/blob/go1.19/src/cmd/link/internal/wasm/asm.go#L133-L138
var Debug = goarch.StubFunction("debug")
var Debug = goarch.StubFunction(custom.NameDebug)
// WasmExit implements runtime.wasmExit which supports runtime.exit.
//
// See https://github.com/golang/go/blob/go1.19/src/runtime/sys_wasm.go#L28
var WasmExit = goarch.NewFunc(wasmExitName, wasmExit,
[]string{"code"},
[]string{},
)
var WasmExit = goarch.NewFunc(custom.NameRuntimeWasmExit, wasmExit)
func wasmExit(ctx context.Context, mod api.Module, stack goarch.Stack) {
code := stack.ParamUint32(0)
@@ -44,10 +31,7 @@ func wasmExit(ctx context.Context, mod api.Module, stack goarch.Stack) {
// runtime.writeErr. This implements `println`.
//
// See https://github.com/golang/go/blob/go1.19/src/runtime/os_js.go#L29
var WasmWrite = goarch.NewFunc(wasmWriteName, wasmWrite,
[]string{"fd", "p", "p_len"},
[]string{},
)
var WasmWrite = goarch.NewFunc(custom.NameRuntimeWasmWrite, wasmWrite)
func wasmWrite(_ context.Context, mod api.Module, stack goarch.Stack) {
fd := stack.ParamUint32(0)
@@ -70,15 +54,12 @@ func wasmWrite(_ context.Context, mod api.Module, stack goarch.Stack) {
// See https://github.com/golang/go/blob/go1.19/src/runtime/mem_js.go#L82
//
// TODO: Compiler-based memory.grow callbacks are ignored until we have a generic solution #601
var ResetMemoryDataView = goarch.NoopFunction(resetMemoryDataViewName)
var ResetMemoryDataView = goarch.NoopFunction(custom.NameRuntimeResetMemoryDataView)
// Nanotime1 implements runtime.nanotime which supports time.Since.
//
// See https://github.com/golang/go/blob/go1.19/src/runtime/sys_wasm.s#L184
var Nanotime1 = goarch.NewFunc(nanotime1Name, nanotime1,
[]string{},
[]string{"nsec"},
)
var Nanotime1 = goarch.NewFunc(custom.NameRuntimeNanotime1, nanotime1)
func nanotime1(_ context.Context, mod api.Module, stack goarch.Stack) {
nsec := mod.(*wasm.CallContext).Sys.Nanotime()
@@ -89,10 +70,7 @@ func nanotime1(_ context.Context, mod api.Module, stack goarch.Stack) {
// Walltime implements runtime.walltime which supports time.Now.
//
// See https://github.com/golang/go/blob/go1.19/src/runtime/sys_wasm.s#L188
var Walltime = goarch.NewFunc(walltimeName, walltime,
[]string{},
[]string{"sec", "nsec"},
)
var Walltime = goarch.NewFunc(custom.NameRuntimeWalltime, walltime)
func walltime(_ context.Context, mod api.Module, stack goarch.Stack) {
sec, nsec := mod.(*wasm.CallContext).Sys.Walltime()
@@ -108,7 +86,7 @@ func walltime(_ context.Context, mod api.Module, stack goarch.Stack) {
// goroutine and invokes code compiled into wasm "resume".
//
// See https://github.com/golang/go/blob/go1.19/src/runtime/sys_wasm.s#L192
var ScheduleTimeoutEvent = goarch.StubFunction(scheduleTimeoutEventName)
var ScheduleTimeoutEvent = goarch.StubFunction(custom.NameRuntimeScheduleTimeoutEvent)
// ^^ stubbed because signal handling is not implemented in GOOS=js
@@ -116,7 +94,7 @@ var ScheduleTimeoutEvent = goarch.StubFunction(scheduleTimeoutEventName)
// runtime.notetsleepg used by runtime.signal_recv.
//
// See https://github.com/golang/go/blob/go1.19/src/runtime/sys_wasm.s#L196
var ClearTimeoutEvent = goarch.StubFunction(clearTimeoutEventName)
var ClearTimeoutEvent = goarch.StubFunction(custom.NameRuntimeClearTimeoutEvent)
// ^^ stubbed because signal handling is not implemented in GOOS=js
@@ -124,10 +102,7 @@ var ClearTimeoutEvent = goarch.StubFunction(clearTimeoutEventName)
// for runtime.fastrand.
//
// See https://github.com/golang/go/blob/go1.19/src/runtime/sys_wasm.s#L200
var GetRandomData = goarch.NewFunc(getRandomDataName, getRandomData,
[]string{"r", "r_len"},
[]string{},
)
var GetRandomData = goarch.NewFunc(custom.NameRuntimeGetRandomData, getRandomData)
func getRandomData(_ context.Context, mod api.Module, stack goarch.Stack) {
r := stack.ParamBytes(mod.Memory(), 0 /*, 1 */)